MESON Chess Problem Database
Problem Display
PID: 203409 (8/8/2p5/4RK2/2Nkp3/2p5/1n2P3/B3Q3 w - - 0 1)
Oosterholt, Cornelis Johannes
Noord-Hollandsch Dagblad, 1924
#2
6 + 5
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sd3
- 2.Qxc3#
- 1...Sxc4
- 2.Qxc3#
- 1...e3
- 2.Qh4#
- 1...Sd3
- Tries
- 1.Sxb2?
- threat
- 2.e3#
- 1...Ke3
- 2.Rxe4#
- 1...e3
- 2.Qh4#
- 2.Qd1#
- 1...cxb2!
- threat
- 1.Sa3?
- 1...Ke3
- 2.Sc2#
- 2.Rxe4#
- 1...Sd1
- 2.Qd2#
- 1...Sd3
- 2.e3#
- 1...Sa4
- 2.Qd2#
- 1...Sc4
- 2.Sc2#
- 2.Qxc3#
- 1...c2
- 2.Qd2#
- 1...e3
- 2.Qh4#
- 1...c5!
- 1...Ke3
- 1.Se3?
- 1...Kxe3
- 2.Rxe4#
- 1...Sd1
- 2.Qd2#
- 1...Sa4
- 2.Qd2#
- 1...Sc4
- 2.Sc2#
- 2.Qxc3#
- 1...c2
- 2.Qd2#
- 1...c5
- 2.Rxe4#
- 1...Sd3!
- 1...Kxe3
- 1.Sa5?
- 1...Ke3
- 2.Rxe4#
- 1...Sd1
- 2.Qd2#
- 1...Sd3
- 2.e3#
- 1...Sa4
- 2.Qd2#
- 1...Sc4
- 2.Qxc3#
- 1...c2
- 2.Qd2#
- 1...e3
- 2.Qh4#
- 1...c5!
- 1...Ke3
- 1.Sd6?
- 1...Ke3
- 2.Rxe4#
- 1...Sd1
- 2.Qd2#
- 1...Sd3
- 2.e3#
- 1...Sa4
- 2.Qd2#
- 1...Sc4
- 2.Qxc3#
- 1...c2
- 2.Qd2#
- 1...e3
- 2.Qh4#
- 1...c5!
- 1...Ke3
- 1.Bxb2?
- threat
- 2.Qxc3#
- 1...Kxc4
- 2.Qxc3#
- 1...cxb2!
- threat
- 1.Qf2+?
- 1...e3
- 2.Qh4#
- 2.Qf4#
- 1...Kxc4!
- 1...e3
- 1.Qg1+?
- 1...e3
- 2.Qg4#
- 1...Kxc4!
- 1...e3
- 1.Sxb2?
- Keys
- 1.Sb6!
- 1...Ke3
- 2.Rxe4#
- 1...Sd1
- 2.Qd2#
- 1...Sd3
- 2.e3#
- 1...Sa4
- 2.Qd2#
- 1...Sc4
- 2.Qxc3#
- 1...c2
- 2.Qd2#
- 1...e3
- 2.Qh4#
- 1...c5
- 2.Rxe4#
- 1...Ke3
- 1.Sb6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(a);P_SPINP(b)::QAB1(B),XP(b)
- S(a);P_SPINP(b),XS(D)::QAB1(B),XP(b)
- P(d);OGATEB::QAR(B)
- Tries
- Try
- S(D);XS(a)
- Threat
- P(C)
- Vars
- K(c);P_SPINP(d),S_FLIGHT::R1(E),XP(d)
- Refutation
- P(b);P_SPINP(b),XS(D)
- Try
- S(D);
- Vars
- S(a);N_GUARD,P_SPINP(b)::QAR2(B)
- S(a);P_SPINP(b),SBLOCK::P(C)
- P(b);N_GUARD,P_SPINS(a)::QAR2(B)
- P(d);OGATEB::QAR(B)
- Refutation
- P(e);
- Try
- S(D);
- Vars
- K(c);P_SPINP(d),S_FLIGHT,XS(D)::R1(E),XP(d)
- S(a);N_GUARD,P_SPINP(b)::QAR2(B)
- P(b);N_GUARD,P_SPINS(a)::QAR2(B)
- P(e);SBLOCK::R1(E),XP(d)
- Refutation
- S(a);P_SPINP(b)
- Try
- S(D);
- Vars
- K(c);P_SPINP(d),S_FLIGHT::R1(E),XP(d)
- S(a);N_GUARD,P_SPINP(b)::QAR2(B)
- S(a);P_SPINP(b),SBLOCK::P(C)
- S(a);P_SPINP(b)::QAB1(B),XP(b)
- P(b);N_GUARD,P_SPINS(a)::QAR2(B)
- P(d);OGATEB::QAR(B)
- Refutation
- P(e);
- Try
- S(D);
- Vars
- K(c);P_SPINP(d),S_FLIGHT::R1(E),XP(d)
- S(a);N_GUARD,P_SPINP(b)::QAR2(B)
- S(a);P_SPINP(b),SBLOCK::P(C)
- S(a);P_SPINP(b)::QAB1(B),XP(b)
- P(b);N_GUARD,P_SPINS(a)::QAR2(B)
- P(d);OGATEB::QAR(B)
- Refutation
- P(e);
- Try
- B(A);P_PINP(b),XS(a)
- Threat
- QAB1(B),XP(b)
- Vars
- K(c);N_SPINP(b),P-FLIGHT,XS(D)::QAR1(B),XP(b)
- Refutation
- P(b);N_SPINP(b),XB(A)
- Try
- Q(B);CHECK
- Refutation
- K(c);P-FLIGHT,XS(D)
- Try
- Q(B);CHECK
- Vars
- P(d);OGATEB,P_SPINP(d)::QAR(B)
- Refutation
- K(c);P-FLIGHT,XS(D)
- Try
- Actual
- S(D);
- Vars
- K(c);P_SPINP(d),S_FLIGHT::R1(E),XP(d)
- S(a);N_GUARD,P_SPINP(b)::QAR2(B)
- S(a);P_SPINP(b),SBLOCK::P(C)
- S(a);P_SPINP(b)::QAB1(B),XP(b)
- P(b);N_GUARD,P_SPINS(a)::QAR2(B)
- P(d);OGATEB::QAR(B)
- P(e);SBLOCK::R1(E),XP(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).